There are a lot more rules for obstructions than just the 48" rule. Look at Chapter 8 of NFPA 13.
There are a lot of designers I've dealt with that don't even know about the rules in chapter 8 (which is pretty sad and a poor testament with regard to training) and they think if they are 48" or less they're fine. Sorry but that is not entirely true. Craig L. Prahl Fire Protection Group Lead/SME CH2M 200 Verdae Blvd. Greenville, SC 29607 Direct - 864.920.7540 Fax - 864.920.7129 CH2MHILL Extension 77540 [email protected] -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of very Cool Sent: Wednesday, January 11, 2017 7:14 PM To: [email protected] Subject: Light as an obstruction [EXTERNAL] I have a project where ceiling lights is hung from the ceiling. The light is 48" so technically we do not have to sprinkler under it (code requires sprinkler under obstruction more than 4 feet wide), but I am wondering what to be done if this was 49 inches. This light is located more than 4 feet from ceiling slab and putting sprinkler under it is not an option architecturally. Wondering if anyone came across this scenario. P.s. Light is a solid round shape with 48" diameter Ramez _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
